The expansion was inaugurated on December 23, 2011. The 29.4 billion yuan project was designed by the Southwest Hospital of China Construction, with the installation of China Construction, installation in Sichuan and installation in Guangdong. As a supplier of air-conditioning air vent valves for airport construction, Wesven provides customized various forms of air vents for this project, and ensures the smoothness of the appearance of the air vents and the stability of the whole under the premise of meeting the requirements of airport construction and installation, and meeting the amount of ventilation.

The fourth phase of the Chongqing Jiangbei Airport expansion project is expected to be completed by the end of 2016 and put into operation in June 2017. After the completion of Jiangbei Airport will be able to meet the world's largest aircraft A380 take-off and landing, flight class to reach the world's advanced level of 4F, its annual passenger throughput capacity will reach 45 million passengers, cargo and postal throughput capacity of 1.1 million tons, can actually meet 50-60 million passenger throughput.